Respuesta :

snorlaxventures
Kinetic energy = 1/2 * mass * velocity^2
KE = 1/2*m*v^2

Given m = 12.8 kg, v = 8.4 m/s;

KE = 1/2(12.8)(8.4)^2
KE = 451.58 J
KE = 452 J